/*
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * The Original Code is Copyright (C) 2005 Blender Foundation
 * All rights reserved.
 *
 * The Original Code is: all of this file.
 *
 * Contributor(s): Austin Benesh. Ton Roosendaal.
 *
 * ***** END GPL LICENSE BLOCK *****
 */

/** \file blender/imbuf/intern/metadata.c
 *  \ingroup imbuf
 */


#include <stdlib.h>
#include <string.h>

#include "BLI_utildefines.h"
#include "BLI_string.h"

#include "BKE_idprop.h"

#include "MEM_guardedalloc.h"

#include "IMB_imbuf_types.h"
#include "IMB_imbuf.h"

#include "IMB_metadata.h"

#define METADATA_MAX_VALUE_LENGTH 1024


void IMB_metadata_ensure(struct IDProperty **metadata)
{
	if (*metadata != NULL) {
		return;
	}

	IDPropertyTemplate val;
	*metadata = IDP_New(IDP_GROUP, &val, "metadata");
}

void IMB_metadata_free(struct IDProperty *metadata)
{
	if (metadata == NULL) {
		return;
	}

	IDP_FreeProperty(metadata);
	MEM_freeN(metadata);
}

bool IMB_metadata_get_field(struct IDProperty *metadata, const char *key, char *field, const size_t len)
{
	IDProperty *prop;

	if (metadata == NULL) {
		return false;
	}

	prop = IDP_GetPropertyFromGroup(metadata, key);

	if (prop && prop->type == IDP_STRING) {
		BLI_strncpy(field, IDP_String(prop), len);
		return true;
	}
	return false;
}

void IMB_metadata_copy(struct ImBuf *dimb, struct ImBuf *simb)
{
	BLI_assert(dimb != simb);
	if (simb->metadata) {
		IMB_metadata_free(dimb->metadata);
		dimb->metadata = IDP_CopyProperty(simb->metadata);
	}
}

void IMB_metadata_set_field(struct IDProperty *metadata, const char *key, const char *value)
{
	BLI_assert(metadata);
	IDProperty *prop = IDP_GetPropertyFromGroup(metadata, key);

	if (prop != NULL && prop->type != IDP_STRING) {
		IDP_FreeFromGroup(metadata, prop);
		prop = NULL;
	}

	if (prop == NULL) {
		prop = IDP_NewString(value, key, METADATA_MAX_VALUE_LENGTH);
		IDP_AddToGroup(metadata, prop);
	}

	IDP_AssignString(prop, value, METADATA_MAX_VALUE_LENGTH);
}
